Actual welding, NO. However, brazing and soldering, YES. Brazing is very much like soldering wires in electronics, in that you are using a molten "filler" to bridge the gap between two solid metal parts. The metal parts do NOT melt. The molten metal brazing filler material acts very much like any glue or adhesive which does not dissolve into the base parts to stick the parts together. In welding, the base metal parts are melted along with a filler to form a molten pool of metal which mixes and then solidifies. If brazing is done correctly in things such as seawater piping in submarines, the brazed joint is stronger than the base metal of the pipe itself.
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